Results 111 to 120 of about 723,578 (197)

Using Freshwater Mussels as an Indicator for River Water Quality [PDF]

open access: yes, 2017
Using the freshwater mussel to monitor water quality is a practical and advantageous way to use nature’s indicator species. River water quality is an important measurement that is constantly monitored for many purposes.
Clark, Ariana   +3 more
core   +1 more source

Africa: the FBA connection [PDF]

open access: yes, 1986
Since its inception in the 1930's the Freshwater Biological Association at Windermere, England has been involved in research on African lakes and rivers.
Fryer, G., Talling, J.F.
core  

Risk Management and the Role of Off-farm Income [PDF]

open access: yes
The majority of farm households in OECD countries earn more off-farm income than farm income, even including government payments. While this is a well recognized fact its implications for risk management have not been well recognized.
Freshwater, David, Jette-Nantel, Simon
core   +1 more source

Some observations on the temporal variations of size of copepods and some answers to questions on their biology. [Translation from: Internationale Revue der Gesamten Hydrobiologie und Hydrographie 17 99-114, 1927.] [PDF]

open access: yes, 1927
Until now observations on the temporal variation of size of freshwater copepods have not provided much information. Other observers only mention in passing this or that phenomenon from which it is possible to deduct termporal variations.
Rzoska, J.
core  

Freshwater immersion as a method to remove Urosalpinx cinerea and Ocinebrellus inornatus from mussel seed [PDF]

open access: yes
A simple experiment to test whether immersion in freshwater for ≤24 hours would kill two oyster drills, Urosalpinx cinerea and Ocinebrellus inornatus was conducted to test the proposal of using freshwater to rid mussel seed of the drills before ...
Brink, A., Wijsman, J.W.M.
core   +1 more source

SOCIAL CAPITAL AND ECONOMIC GROWTH: A COUNTY-LEVEL ANALYSIS [PDF]

open access: yes
The effect of social capital on economic growth is examined using linear regression analysis and U.S. county-level data. Results reveal that social capital has a statistically significant, independent positive effect on the rate of per-capita income ...
Freshwater, David   +2 more
core   +1 more source

Effect of salinity on growth and microbial diversity in cultures of <i>Scenedesmus almeriensis</i> produced at a pilot scale. [PDF]

open access: yesFront Bioeng Biotechnol
Rivera-Sánchez ES   +4 more
europepmc   +1 more source

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